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AB||CD ,CD|| EF and y:z =3:7,find …

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AB||CD ,CD|| EF and y:z =3:7,find x.

    • Posted by Rohit Singh 5 years, 2 months ago

    CBSE > Class 09 > Mathematics
    • 1 answers

    Disco Boy ????? 5 years, 2 months ago

    Let angle be=r, So,3r:7r, Z=x=7r (alternate), X+y=180 (sum of co- interior), 7r+3r=180, 10r=180, r=180/10, r=18, X=7×18=126

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